{"data":{"id":"us/14-cfr-27.629","jurisdiction":"us","citation":"14 CFR 27.629","heading":"Flutter.","body":"Each aerodynamic surface of the rotorcraft must be free from flutter under each appropriate speed and power condition.","path":["Title 14—Aeronautics and Space","CHAPTER I—FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION","SUBCHAPTER C—AIRCRAFT","PART 27—AIRWORTHINESS STANDARDS: NORMAL CATEGORY ROTORCRAFT","Subpart D—Design and Construction"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-14.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:24:20Z","sha256":"6933d39ec9c6c595e31bb2941b34143c37118ca147809f0773e6d83b64dac926","source_id":"us-cfr","stale":true,"prev":"us/14-cfr-27.625","next":"us/14-cfr-27.653"},"notice":"GroundRules: Original legal text. Not legal advice."}